Well, you still have the big problem of framing the shot correctly. Even bigger now that every attempt involves collapsing the stick each time. Plus the camera angle errors will be exagerated over the longer distance (pole compared to arm).
I guess you could put the display on the lens side, but it'd have to be a big and bright one to be usefully visible at the distance.
Another option, I guess, would be to buy a second pole and put a mirror on it, to help you frame the shot using the display on the back of the camera.
Finally a point to those Nordic Walking sticks!